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Math Help - please use remainder theorem to solve:

  1. #1
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    Lightbulb please use remainder theorem to solve:

    x^3+6x^2-11x+8divided by x+1
    please solve completely
    THANKS
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  2. #2
    Senior Member DivideBy0's Avatar
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    Quote Originally Posted by Peacewanters007 View Post
    x^3+6x^2-11x+8divided by x+1
    please solve completely
    THANKS
    Hi Peacewanters007!

    The remainder when P(x) is divided by x-a is P(a).

    So the remainder when x^3+6x^2-11x+8 is divided by x+1 is:

    P(-1) = (-1)^3+6(-1)^2-11(-1)+8 = -1+6+11+8=\boxed{24}
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